Door check



March 24, 1936,

DOOR CHECK Fil ed Aug. 29, 1935 R. c. JACOBS 2,0343% a Z ,6 Z

INVENTOR.

7a a Jams ATTORNEYS Patented Mar. 24, 1936 UNITED STATES PATENT OFFIC' 9Claims.

This invention relates to door checks for the purpose of limiting theswinging movement of doors, the present check. being particularlyadapted for use in combination with automobile doors.

The primary object of the invention is to provide a check for limitingthe outward swinging movement of a door, the check embodying cushioningmeans for absorbing shocks set up by stopping the movement of the door.

Another object of the invention is to provide a door check havingyieldable means for holding a door in an open position.

Still another object ofthe invention is to provide a metallic door checkwhich is tensionally resilient and which is laterally resilient, thetensional resiliency serving to cushion the checking action of the doorand the lateral resiliency serving to retard the outward movement of aon door in a manner whereby the retarding action progressively increasesas the door is moved outwardly. In addition the lateral resiliencyserves to hold abutment means in a position yieldably opposing closingmovement of the door.

In my co-pending application Serial No.

23,352 filed May 25, 1935, I have disclosed a door check embodying boththe tensional and lateral resiliency referred to above, the lateralresiliency being attained by forming the check with an integral springportion. Due to the rather severe treatment that door checks receivewhen used in combination with automobile doors this spring portion isrepeatedly strained beyond its elastic limit and obviously the forcesand strains vary greatly inamount. The result is that the metal becomesfatigued.

Still another object of the present invention is to increase the usefullife period of door checks such as shown in the above referred toco-pending application. This object is accomplished by substituting forthe integral spring part, above referred to, a cushion of resilientmaterial such as rubber.

With the above and other ends in view the invention is more fullydisclosed with reference to the accompanying drawing, in which-- Figure1 is a cross section of a door with the present check attached thereto;

Fig. 2 is a similar section illustrating another stage in the operationof the check, and

Fig. 3 is an elevation of the check.

Like characters of reference are employed throughout to designatecorresponding parts.

In the drawing the numeral l designates a wall 55 and 2 a door attachedthereto by a hinge 3. The

edge 4 of the wall has a pair of brackets 5 (one of which is shown)supporting a pin 5. The edge I of the door has an opening 8 over whichis secured a bracket 9. I 'he bracket 9 is socket shaped and has itsrear wall ll] angularly disposed with re- 5 spect to the door edge I andprovided with an aperture II.

The present door check, which is received in the above describedassembly, is formed of a spring metal strip bent intermediate its endsto 10 provide a loop I 2 through which the pin 6 extends to connect thecheck to the wall I. From the loop l2 extends a bowed run l3 which isbent adjacent to its outer end to provide a pair of oppositely disposedshoulders l4 and I5 defining a depression l6. From the shoulder IS thestrip extends to provide an arm I! having a prong I8 struck inwardlythereof and a retainer portion l9 at the extremity thereof.

Also extending outwardly from the loop I2 is a bowed run 20 having apair of oppositely disposed spaced apart shoulders 2i and 22 defining adepression 23. From the shoulder 22 the strip extends outwardly to forman arm 24 having a prong 25 struck inwardly thereof and a retainer 25part 26 on the extremity thereof.

Between the two arms I! and. 24 is placed a block, 21 of resilientmaterial such as rubber. The arms are pressed together so as to imbedthe prongs l9 and 25 in the block 21. The re- 30 tainers I9 and 26 serveas an additional means for holding the rubber in place. The block 21 isof a width whereby it holds the outer ends of the runs l3 and 20 apartand so that they diverge outwardly with respect to the loop l2.

In describing the operation of the check it will be assumed that thedoor 2 is moved from the position shown in Fig. 1 to that shown in Fig.2. During such movement the runs l3 and 20 are drawn through theaperture II and inasmuch as 40 said runs diverge a distance greater thanthe width of the aperture ll they frictionally engage the sides of theaperture and offer a resist ance to such movement. The runs l3 and 20are compressed together and both their natural resiliency and theresiliency of the block 21 oppose such compression. As the door reachesthe position shown in Fig. 2 the side walls of the aperture l0 enter thedepressions l6 and 23 with 50 the result that the shoulders i5 and 22oppose further swinging movement and the shoulders l4 and 2| opposemovement of the door in the opposite direction.

If it is assumed that the door movement is 56 quite rapid there is asevere impact between the shoulders I 5 and 22 and the wall I0. At thistime an additional movement is possible by straightening of the bowedruns l3 and 20. This straightening action, in other words, provides thecheck with tensional resiliency and due to this resiliency the normaltendency of the door is to rebound toward its closed position. Due tothe fact that at this time the side walls of the aperture in extend intothe depressions l6 and 23 the shoulders l4 and 2| check the rebound.

In cases of severe impact, such as above described, the shoulders 'l5and 22 tend to straighten and pull through the aperture Hi. Theresilient block 21 opposes such a tendency. However, in the event theimpact is so severe that either the check or the door hinges must besevered the block 2'! may be compressed to such an extent that itpermits the shoulders l5 and 22 to straighten and pull through theaperture ll.

Although a specific embodiment of the invention has been illustrated anddescribed it will be understood that various changes may be made withinthe scope of the appended claims without departing from the spirit ofthe invention, and such changes are contemplated.

What I claim is:-

1. A door check comprising a spring metal strip bent to provide aretainer receiving loop, a pair of diverging arms extending outwardlyfrom said loop and formed with depressions adjacent to the outer endsthereof, and resilient means interposed between the outer extremities ofsaid arms.

2. A door check comprising a spring metal strip bent to provide aretainer receiving loop and a pair of outwardly extending arms, andresilient means interposed between said arms and holding them in adiverging relationship, said arms having depressions formed thereinadjacent to their outer ends.

3. A door check comprising a pair of flexible arms, means uniting saidarms at one end, resilient means interposed between and holding theother ends of said arms spaced apart, and an abutment on at least one ofsaid arms.

4. A door check comprising a pair of flexible arms, means uniting saidarms at one end, resilient means interposed between and holding theother ends of said arms spaced apart, at least one of said arms having apair of oppositely disposed spaced apart shoulders providing adepresabutment being located between said first named means and saidresilient means.

'7. A door check comprising a pair of flexible arms, means uniting saidarms at one end, a

rubber cushion interposed between said arms to hold. their free endsspaced apart, and check means on said arms between said first namedmeans and said rubber cushion.

8. A door check comprising a pair of flexible arms, means uniting saidarms at one end, a rubber cushion interposed between said arms to holdtheir free ends spaced apart, and check means on said arms between saidfirst named means and said rubber cushion, said check means comprising apair of oppositely disposed spaced apart shoulders.

9. A door check comprising a spring metal strip bent to provide aretainer receiving loop, a pair of diverging arms extending outwardlyfrom said loop and formed with depressions adjacent to the outer endsthereof, and resilient means interposed between the outer extremities ofsaid, arms said diverging arms being normally bowed to provide tensionalresiliency.

REX C. JACOBS.

